Fix handling capitalization in macro names.

src/parser/org_macro.rs

@@ -37,13 +37,13 @@ pub(crate) fn org_macro<'b, 'g, 'r, 's>(
         remaining,
         OrgMacro {
             source: source.into(),
-            macro_name: macro_name.into(),
-            macro_args: macro_args
+            key: macro_name.into(),
+            args: macro_args
                 .unwrap_or_else(|| Vec::with_capacity(0))
                 .into_iter()
                 .map(|arg| arg.into())
                 .collect(),
-            macro_value: Into::<&str>::into(macro_value),
+            value: Into::<&str>::into(macro_value),
         },
     ))
 }